I'm sorry, I don't have specific details about the Ramesh Deo and Seema Deo love story. You might need to refer to more personal accounts, family stories or sources close to them to know the real story.
Well, in some DC Comics arcs, Deo might be considered a good guy, but in others, their actions and motives could be more ambiguous. It really comes down to the context of the particular comic series or event.
The cultural context can be a factor too. A cologne with ingredients that are native to a particular region might tell a story of that place. For instance, a cologne with oud from the Middle East could tell a story of the rich, exotic culture there. The scent can transport you to that place and give you a sense of its traditions, people, and history.
It could be friendship. If Barry and Deo are two characters, their relationship might be explored in terms of a deepening friendship in many fanfics. They could go through various adventures together that strengthen their bond.
Well, it could be that Harry is raised in a world where cologne has some sort of magical property. Maybe the scent of a particular cologne is used to protect him or give him special powers. For example, the cologne might be made from rare magical ingredients and whenever Harry wears it, he can blend into the Muggle world more easily because it masks his wizardly aura.
Well, perhaps the fanfic has some elements that Barry and Deo simply don't like, such as bad writing style or a really out - of - character development for the characters. They join forces to refuse it because they don't want their fans to think they support such a work. They might be worried that it will mislead the fans who look up to them and the original work.
I'm not sure which specific 'barry join deo fanfic' you are referring to. You can try searching on popular fanfic websites like Archive of Our Own or FanFiction.net. There might be a wide variety of fanfics related to these characters there.